Materials Literature
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We have studied the electronic structure of the spinel-type V oxides ${\mathrm{LiV}}_{2}{\mathrm{O}}_{4}$, ${\mathrm{ZnV}}_{2}{\mathrm{O}}_{4}$, and ${\mathrm{CdV}}_{2}{\mathrm{O}}_{4}$ using x-ray photoemission spectroscopy. The $p$-$d$ charge-transfer energy was estimated from the valence-band spectra and the exchan…
This is the first report on the evaluation on the performance of the gas sensing properties of carbon nanotube-polymer composite materials for volatile organic compounds (VOCs). Single wall carbon nanotube-polymer (ethyl cellulose) (SWNT-EC) composite suspensions were prepared in chloroform with the help of poly(p-phe…
A single weak-binding event is multiplied into an efficient receptor site for protein surfaces (<10(-1) to >10(6) M(-1) in buffered aqueous solution) in a biomimetic fashion. This has hitherto been done with natural host/guest pairs, but not with artificial receptors. The organic reaction presented is one of very few…
Abstract Samarium‐doped cerium oxide (CeO 2 :Sm) and undoped cerium oxide (CeO 2 ) thin films were fabricated by electrodeposition on biaxially textured Ni–3% W substrates. The electrodeposited layers were annealed for several hours at temperatures ranging from 910 to 980 °C. The resulting crystalline films were inves…
The helium cooled pebble bed (HCPB) blanket has been a European DEMO reference concept for nearly a decade. While the recent European power plant conceptual study (PPCS) confirmed that the HCPB built from the reduced-activation ferritic-martensitic steel Eurofer is an acceptable choice of a blanket relying only on lim…
Efficient and sufficiently accurate analytical models are valuable tools for the design of planar magnetic components. This paper describes a new analytical model of winding capacitances and dielectric losses for planar transformers. It is compared qualitatively with a more simple model valid for wire wound components…
Non-contacting displacement measuring systems are nowadays preferred for industrial position feedback at actuators. The systems are based on various operating principles whose properties determine the potential areas of application. In spite of the large number of solutions available on the market, there still are app…
It is shown that self-supporting graphitic structures of specific shape can be grown in a variety of forms, from nanoscale to macroscale, on metal templates, in a fuel-rich mixture of ethylene and oxygen at temperatures between 750 and 900 K. The evidence presented suggests graphite can be grown in any shape created f…
The title compound, C28H26N4OS, is an efficient non-linear optical (NLO) material and features a transoid configuration in contrast to the results of quantum chemical calculations. Molecules associate into layers via C—H⋯N interactions.
Porous silicon (PS) of up to 400 /spl mu/m with high porosity (70%) has been studied to integrate high-performance micro-coils on heavily doped Si substrates (7-15 m/spl Omega/cm). 2 /spl mu/m-thick Au spiral inductors with L/spl sim/15 nH were fabricated; they demonstrate a quality factor Q up to 8 in the 0,1 to 2 GH…
The behavior of nematic liquid crystal (LC) Merck Phase 4 confined to controlled pore glass (CPG) materials was investigated using 129Xe nuclear magnetic resonance (NMR) spectroscopy of xenon gas dissolved in the LC. The average pore diameters of the materials varied from 81 to 2917 A, and the measurements were carrie…
We present a novel fabrication technique for discrete and released carbon nanotube based nano-mechanical force sensors. The simple fabrication technique involves pre-patterned coordinate markers used to align the device design to pre-deposited single walled carbon nanotubes (SWCNT): atomic force microscope (AFM) image…
Abstract Two different cubic structures of the negative thermal expansion (NTE) material zinc cyanide have been reported in the literature: one, an ordered structure (space group P 4 3 m ) in which the ZnC 4 tetrahedra are linked to neighbouring ZnN 4 tetrahedra with CN bonds and vice versa, and the other, a disordere…
The Steinmetz equation is applied in a pure hysteresis part and a remaining part following a dB/dt behavior. A double natural Steinmetz extension method for non-sinusoidal waveforms is proposed (DNSE). Tests have been done at 100 kHz square waves for half bridges with variable duty ratio and full bridges with variable…
Near-infrared (1064-nm) irradiation of neat solid samples of benzenethiolate monolayer-protected gold clusters (MPCs) yields strong, well-resolved Raman spectra of the thiolate groups, comparable to those obtained for the same groups adsorbed at roughened gold electrodes. These clusters are formulated as TOAZ[AuN(SPh)…
Counterclockwise hysteresis maps are known to be dissipative in the energy sense as well as in the system-theoretic sense. In a recent paper, Angeli studied feedback interconnections of counterclockwise systems, where counterclockwise refers to the net signed area of the input-output map, which need not be a simple cl…
The long-term function of implantable biosensors is limited by the foreign-body reaction (FBR). Since the acute phase of the FBR involves macrophage attachment mediated by adsorbed fibrinogen, preadsorption, and retention of other proteins might reduce the FBR. The retention of preadsorbed albumin, hemoglobin, von Wil…
Stabilization of polymer material continues to be an important technical field with lot of industrial and scientific attention. Future developments in the field of polymer stabilization need to reflect the corresponding economical requirements. However, ecological requirements start to play increasingly important role…
We describe a single wall carbon nanotube (SWNT) based biological sensor for the detection of biomolecules like Streptavidin and IgG. SWNTs have been employed for two types of sensing mechanisms: changes in the electrical conductance of the carbon nanotube matrix on non-covalent binding of biomolecules to the side wal…
The single-crystal synchrotron study of the high-pressure modification of aluminium oxide hydroxide, δ-AlOOH, confirms the previous structure determination in the space group P21nm, which was based on X-ray powder data [Suzuki, Ohtani & Kamada (2000). Phys. Chem. Miner. 27, 689–693]. The present study includes the det…